Assigiffob



EDSTATES PATENT OFFICE.

CHESTER I. ANGELL, OF CHICAGO, run! 018, ASSIGNOR VEBTA ACGUIUIALTOB GOHP-ANY, OF CHICAGO, ILLINOIS,

A GDBPOEATION OI IIILDI'OIB.

ACCUMULLTOB- ELL.

1,319,940. I Specification or Letters Patent. Patented Oct, 28, 1919,

j j .aplilloatipa filed September 6, 1918. Serial Io. 959,831.

To all whom ic'may' concern Be it known that I, M. ANGELL, a citizen of the United States, residin ,at Chicago, in the county of Cook and tats of Ill1n0is,"have invented certain new and useful Im rovements in Accumulator-Cells, of which t e following is a-specification. This invention relates to an improved construction of an accumulator cell wherein a positive interlocking and spacing mechanism'is provided for the positive and negative plates of the cell."

It 1s an object of the invcntlonto provide means, simple in construction and application, which maintain the plates rigi y associated with one another in proper spaced relation and admit of conveniently assemblin and dismantling the cell.

TEe characteristic features of the invention will be more fully described in the specification and more particularly pointed out in the claims.

In the drawings, which form a part of the specification, I

- Figure 1 is a perspective view of a cell, part of the casing being broken away to show the invention;

Fig. 2 is an end view of the plates removed from the cell;

Fig. 3 is a side elevation of the plates removed from the cell, and

ig. 4'is an isometric view of a form of insulator forming a part of the invention.

Within the jar or box 1, of the cell are grouped, the positive plates 2 and the negative plates 3, spaced from each other by the ont 80' plate straps and- Wood separators (neither of which are shown). The means for locking the plates apart inssuch a manner as to form a unit having a relatively solid mechanical structure is the subject of the pres ent invention and are as follows:

The plates, the positive plates 2 as well as the negative plates 3 have on one lateral edge lugs 4 and 5 and on the opplosite edge lugs 6 and 7 so disposed that, as t 0 positive plates and the negativejplates assume rela tivel reversed positions, the lugs 4 and 5 lie positive late i-form with the lugs 6 and 7, respective y, on the nepatlve plate or vice versa, four groups of c ampmg Jaws, each group to receive an insulator plate 8,

ferabl of eelluloid,.shown -1n detail in Fi 4. is insulator is need g. plate 8 has notches 9 in the upper edge'to receive the lugs 4 and 6 respectively, and notches 10 in the lower ed to receive the lugs 5 and 7 respectively. s will appear clearly from Fig. 3, the In 4 and 5 are slightly undercut to .firml old the plates 8 in place.

A ter the plates 2 and 3 are placed in proper alinement the plates 8 are inserted so that the lugs occupy the notches 9 and 10, the lugs 6 and 7 are pressed downwardly and upwardly, respectively, to lock the plates in place. This may be readily accomlished by means of a suitable tool, since the u? are fairly pliable.

n this manner the plates are held rigidly together a inst relative movement in the planes of t e plates as well as at right angle thereto and constitute a single, solid mechanical structure adapted to stand the severest kind of treatment. When it is desired to dismantle the cell, it is merely necessary to pry the lugs slightly apart, as by means of a suitable tool, to free the insulator plate 8 from the gri of the lugs 6 and 7, res ectively. The col may be repeatedly assem led and dismantled without materially deforming or distorting the lugs or injuring the plates and the rocess of assembling and dismantling may lie carried out in an exceedingly short time.

It is to he noted that by the present arrangement the bending strains are so related that only a relatively thin insulator plate to produce the degree of rigidity re uired.

he most characteristic feature, however, is the particular relative position of the lugs 4, 5, 6 and 7. Each plate has on each side 9. lug forming an; upwardly directed shoulder to bear upwardlyagainst one insulator plate and a lug forming a downwardly directed shoulder to bear downwardly against the second insulator plate. The relation of these shoulders on the plates of opposite sign is reversed. It is thus clear that no relative movement of the plates is ssiible since the insulator plates are held in p It is to be further noted that the distance from a projecting. metal lug of a positive plate to that of the projecting lug of the nearest negative platc1s considerably ater than in a construction having dou 1c the number of lugs or a construction using metal ears with slots to contain the insulators. By this arrangement the tendency of conducting particles to lodge and short circuit the positive and negative plates is greatly reduced especially in the type of cells that employ thin plates and wood separators or mats.

However, I do not wish it understood that I necessarily limit myself to the use of alternating lugs when it is not necessary or desirable.

I claim 1. In an accumulator cell the combination with the plates. of insulator elements extending across the edges of the plates on the same side thereof in vertically spaced relation and logs on each plate positioned to engage the upper edge of one insulator element and the lower edge of the other insulator element respectively.

2. In an accumulator cell the combination with the plates. of insulator elements eX- tending across the edges of the plates on the same side thereof in vertically spaced relation and lugs on each plate positioned to engage the upper edge of one insulator element and the loweredge of the other'insulating clement respectively, the lugs extending along one edge of each insulator element being mulercut and the lugs extending along the opposite edge being pliable.

3. In an accumulator cell the combination namem with the plates, of insulator plates extending across the edges of the plates on the same side thereof in vertically spaced rela tion and each having notches in its upper and its lower edge, an upper and a lower lug on each plate, the said lugs and notches ing so related that one lug on each plate engages a. notch in one edge of one insulator plate and the second lug a notch in the opposite edge of the second plate.

*1. In an accumulator cell the combination with the plates, of insulator plates extending across the edges of the plates on the same side thereof in vertically spaced relation and each having uniformly spaced notches in its upper edge corresponding to the positions of alternate plates and uniformly spaced notches in its lower edge COP? responding to the positions of intermediate alternate plates, an upper and a lower lug on each plate, the said lugs and the said notches being so related that one lug on each plate engages a notch in the upper edge of one insulator plate and the second lug a.

notch in the lower edge of the second insu-;

lator plate.

In testin'iony whereof, I alfix my signature.

CHESTER M. ANGELL. 

